Form work for casting walls and the like



' 1,640,997 s. c. HOLLISTER' FORM WORK FOR CASTING WALLS AND THE LIKE Filed April 1926 2 Sheets-Sheet 1 Aug. 30, 1927.

1,640,997 s. c. HOLLISTER FORM WORK FOR CASTING WALLS AND THE LIKE Filed April 8, 1926 2 Sheets-Sheet 2 Patented Aug. 30, 1927.

atte-97 UNITED STATES PATENT" FFECE.

SOLOMON O. HOLLISTER, OF SWARTHMORE, PENNSYLVANIA, ASSIGNOR TO JOHN H.

MGCLATCHY, OF PHILADELPHIA, EENNSYLVANIA.

FORM'WORK FOR CASTING WALLS AND THE LIKE.

Application fi1ed April 8,

For many years, walls and structures of concrete have been cast in molds of one kind and another; but although numerous efforts have been made, it has heretofore been found impracticable to produce such a wall with a continuous surface true and plane enough to dispense with the need for a coat of plaster, where a smooth appearance is .important. The present invention relates to molds or forms for casting walls and the like of plastic material and has for its principal objects to insure the production of a wall with a continuous plane surface suitable for use in homes and other buildings where a neat appearance is important; also to dis pense with the need for a coat or coats of plaster and thereby save the cost thereof; also to obtain other advantages hereinafter appearing.

The invention consists principally in form units in the form of flat plates adapted to be assembled edgewiseand with their adjacent margins provided with means for insuring proper alinement of the units with the faces of adjacent-plates flush. It also .consists in the parts and arrangements of parts hereinafter described and claimed.

In the accompanying drawing wherein likejsymbols refer to like parts wherever they occur,

Fig. 1 is a perspective view of part of a form work embodying my invention;

Fig. 2 is a horizontal crosssection through the form work of Fig-1;

Fig. v3 is a similar cross-section illustrating a modification of the form work;

Fig. 4 is an enlarged sectional detail view through a guiding strip and adjacent portions of stiffening members, and

Fig.5 is an enlarged fragmental view of the corner portions of two units approaching contact in the course of assembly.

My form work comprises a number of units adapted to be secured together edge to edge in flush alinement. Each unit com prises a fiat plate l of fairly stiff metal,

such, for instance, as a N0. 10. gage'steel' plate, Along one of its margins is secured a suitable stiifening member, such, for in stance, as channel iron i which is riveted thereto by rivets ,whose heads are countersunk flush with the surface of the plate, the rivets passing through one flange of the channel, and the edge of'the plate being dis- 1926. Serial No. 100,627.

posed beyond the channel and extending parallel therewith. On the opposite flange of the channel is mounted flatwise a strip 5 whose margin projects beyond the channel. The portion of said. projecting margin adjacent to the channel is substantially parallel withthe' projecting margin of the plate, while the outer portion of said strip is bent slightly or bevel-ed on its inner surface, as shown atlt, to widen the distance between said outer portion of the strip and the edge of said plate. This arrangement forms a guide-way for bringing cooperat- 1ng units into proper register, as hereinafterdescribed.

The opposite margin of said plate 1 is also provided with a stiffening member, such as a channel iron 2 that is secured thereto by rivets extending through one flange of the channel iron and countersunk flush with the surface of the plate, the webof this channel iron being disposed beyond the edge of the plate and extending parallel therewith. Preferably the two channel irons are of the same depth, so that when two sim ilar or counterpart units are assembled, the channel of one unit is readily and easily entered between the guide strip 5 and projectlng margin of the plateof the other suit. In use, suitable clamps 12 are appliedto adjacent channels and the adjacent edges of the plates are thereby pulled tight together. To permit this, the margin of one plate should project far enough beyond the adj acent channel of its unit to overlap the uncoveredportion of the channel of the next unit and reachthe edge of its plate.

In practice it is preferable to make the units identical sothat they will be interchangeable. If desired, however, the units may be made in sets, both of the stiffening channels of one set extending beyond the edge of the form-plate, and both stiifening channels of the other set being wholly within the edges of their form-plate.

The units above described are used after the manner of ordinary form-work. sembling them, the strengthening channel that projects beyondthe-form-plate of one unit is entered betweenthe projecting portion of the form-plate of the adjacent unit and the guidestrip thereof, 1 whereby said units are brought into proper registry with each other with the surfaces of their form- In as- -ta.i ned, resides in a guide phlea liunh. For this; operation suitable clam 1'21 are applied to the channels to draw them tie ht together. Straight. rigid walers it) are Stlllitlljly positioned and against these. the units-sv are lined up and se cured in any suitable manner, as by ordinary tier: 7 that pas through holes 8 in the tormpia'les and are provided with holes tor Wedge keys 9 or with locking pins 15. here wide term-plates are useth it is preferable to stillen them with channel irons 1G or the ill-I extending); through the middle portion thereof; and in such case, spacingblflttlifs 11 are used on the hack thereof ot the same thickncs with the guide plates 5, for cooperation with the trailers in obtaining the correct alineuient of the middle ptn'tions of the taco plates.

ue manner oit an-senrhlinu and interlocltthem. into correct re 'isiou iii a true plane surface and at the maintenance of ouch suriace during the ca ting operation. its each. oil? the opporaite martini: ot the stitl plate are errata stiii'euezl by the channel irons, there no danger of the nur' ns o't said un ilexinu, pucltering or dis ortingr in any manner. It: particle larly noted that the mura al. portion ot the torui'plate projecting; be .nd its channel iron is not only narrow but, in use, is thoroughl supported throughout its length by the channel iron ot the adjacent unit that cons ates a neat theretor. Thus. edge contact oi? adjacent plates and flush surface alinenient tl'rereo'l are both obtained.

in practice, straight horizontal WttlQtS. preferably in the form ot rie'id channels or .i-heaans are used to ii prope' alineincnt ot' the unit and the scillfening' members of the units have a wide tlati bearing against them. I l is noted, in this connection, that. the Qfi-llllit. sinking: ot the rivets that hold the guide plates on the channel irons pernlilu sucn a tint bearing of such channels against the 'alers. B this arrangement, the units are lined up against the Wailers, and the guiding: joint: between units auto niatical.l bring; the :liaces ot the term-plates nit the units into .tlush register.

in the construction hercinlnrtoro described, the guide function, whereby the tluah registration of the mold plates is obplate mounted on the back oi? the stil'lening: channel iron. In the nnidilication illustrated in Fig. 3, the guiding function is accomplished in a ditlerent manner. itccordin to this lllOCllIllCPv tion. 'putillgf strips 19. intervene between the term-plate and the respective channels it the margins thereof. These spacing are o't even thickness. In the case. however. oi the strip 19 that is associated with the. margin ot the. plate that terminates short ot the Web of the stiffening channel iron, its thickness decreases gradually towards its outer margin from a, line tar enough from the edge at the :tornrplato to leave suiiicient bearing for the :torni-plate ot the next adjacent unit. The inclined portion ot the spacing; p thus functions as a guide-Way that 'l'acditates the assembling; ot the units and the proper guiding oi: the form-plate into flush register with the next tornrplate while the tint projecting portion of such spacingstrip aliiord i auiple support. tor the projecting margin ot the adjacent term-plate in its tinal position.

The foregoing descriptionscts forth the manner of assemblingthe units in horizontal alinen'ient, in. "which case the stiffening chunncls are applied to the vertical nmrgins ot the sheets. (llniolr-ly the same idea is ap 1. 1 able to the assembling; of? the units in ver- For this pu 'pose, the units tical aliuelnent. may be arranged with tho uuirginal stilicninn" and assembling dexdces diruposed horizontally; or they may be provided with such devices along; their horizontal margins as Well as along; their vertical margins. This latter arrzmgz einent is illustrated in the up per portion of Fl l ot the drawing.

hat. I claim 15;:

l. A term unit for casting plastic 1na-- terial comprising a plate and stiffening menibers on opposite margins oi? said plate ar ranged with their outer edges opared shit Wise from the outer edges ot said plate suitably tor cooperation with counterpart plates. said unit having an inclined surface adaptcd to guide such counterpart unit int o re ns-- ljer therewith.

A term unit for casting; plastic n1aterial conunrisine; a plate and cha1n1ol-.- hapod stitteningr members on opposite margins of said plate with their flanged portions e1:- tending inwardly. one of said ll'lQllllJCl'S ere tending beyond the adjacent ede'e oi said plate, and the opposite edge o'l. rid plate extending beyond the outer edge of the, ad.- jacent. stitlening member, said last mentioned stitt'cncing fl'lGl'l'lbCt having a guide piece on its outer flange extending; beyond the Web thereof and having; an inclined surface con stitutinp; a guide :tor a similar stiffening; member on an adjacent plate.

8. A form unittor casting plastic 1nuterial comprising a plate and stiilt'ening merohers on opposite margins of said plate, one of said members extending beyond the adjacent edge of said plate, and the opposite edge of said plate extending beyond the outer edge of the adjacent stiffening 1nemher, said unit having an inclined surface arranged for cooperation with a counterpart; unitto bring their plates into edge contact and flush alineinent with the projecting; inurgin of the plate of one unit overlap nngg the uncovered portion of the stiltening member oi. the other unit.

4-. A iterlnworlt :tor casting walls of plastic surface arranged to guide the units into correct position. v

5. A fo-rmwork for casting walls of plastic mate-rial comprisin a plurality of units consisting of plates having angular stiffening members secured along opposite margins in such positions that the edges of adjacent plates meet over one of such stiffening members one of said stiffening members having a strip secured thereto substantially parallel with the plate on which said Stillening member is mounted but, which projects beyond said stiffening member and has the outer portion 01": its inner surface inclined to form a guide for the adjacent stiffening member.

6. A formwork for casting walls of plastic material comprising a. plurality of units consisting of plates having channel-like stiffl ening members secured along their margins, some of said channel-like members being positioned to extend beyond the edges of their plates and some or" them being positioned wholly within theedges of their plates to afford support for the projecting margins of adjacent plates, some of said channel-like members being provided with guide pieces with inclined surfaces against which the ad-- jacent stiffening member rides to correctly position adjacent units.

7. A formwork for casting fiat walls of plastic material comprising a plurality of units consisting of flat plates having stiffening members on opposite margins and in their middle portions, said marginal members being arranged to permit said plates to abut edgewise over the same stiffening members, and straight rigid walers against which said units abut.

8. A form work for casting walls of plastic material comprising a plurality of units consisting of plates having channel shaped stiffening members secured along their margins with their flanges extending inwardly, some of said stiffening members being positioned to extend beyond the edges of their plates and some being positioned wholly within the ecges of their plates to afford support for the projecting margins of adj acentplates, those stiffening members that are wholly within the margins of their plates having guide pieces secured fiatwise against their outer flanges and extending beyond the webs thereof and having their projecting portions formed with inclined surfaces against which the adjacent stiffening member rides to correct position and straight rigid walers against which the guide plates abut.

Signed at Philadelphia, Pa, this 7th day of April, 1926.

SOLOMON O. HOLLISTER.

Certificate of Correction. Patent No. 1,640,997. Granted August 30, 1927, to

SOLOMON O. HOLLISTER.

It is hereby certified that error appears in the printed specification of the abovenumbered patent requiring correction as follows Page 1, line 83, for the Word suit read emit; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 4th day of October, A. D. 1927.

[ -1 M. J. MOORE,

Acting Gammissioner of Patents. 

